DE1988457U - APPLICATION DEVICE FOR MELT ADHESIVE, IN PARTICULAR FOR GLUING CARDBOARD. - Google Patents

Description

Utility model application from 8, - 3 · - 68

! irma WiIh. Sehmitz-Seholl, 433 Mtilheim-Bnhr,

Wissollstr * 5-19

our files-lr «1374- / 443 (" please indicate in all the two sides)

To the

German patent office

ti η G h en

ZweibrüGkenstr. 12th

Applicator for hot melt glue, especially for gluing cardboard boxes.

The firing relates to an application device for over one Infeed nozzle with separate clay glue, especially »for IGJoen of cardboard boxes, with mutual displacement τοη feed nozzle and loaded property.

Clay glue has high levels even when it is still warm Adhesive strength, set faster and harden faster than other adhesives. They therefore allow when using On cardboard boxes, the processing of cardboard boxes is much easier.

So far, adhesives have been continuously applied to feed nozzles the S-egenstand to be glued is applied. The adhesive forms a more or less liquid adhesive strip on the item »The amount of glue required is proportionate high.

The control has the task of an application device create that allows continuous work with clay adhesives with significantly less adhesive expenditure »

The application device after the leuer achieves this in that the Sehmelz glue in a heated, pressure and Vacuum-proof gate pan with feed nozzle at the lowest point filled in and by alternately applying pressure and vacuum

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Dipl. INQ.- JULIUS QILIARD PATENT ADVOCATE

onto the storage kettle drop by drop from the feed nozzle the object to be glued is removable "

The size of the K3s droplet is once in this device determined by the feed nozzle, but also by the change in pressure and vacuum in the storage tank. The sudden one The transition from pressure to vacuum in the storage tank brings the drop to a time-wise precisely determined time Tear off. If the application device and the object to be glued move continuously against one another, then this arises a regular sequence of glue dots on the object to be glued with the following economical glue consumption. In the Device after the control, the mutual displacement between the feed device and the object can take place faster than with the known devices that © inen pull continuous adhesive tape. The timing of the pressure and vacuum swirl allows you to determine the size of the drops also simply change the drop spacing without the traveling speed of the conveyor for the objects to be glued have to be readjusted, which is more cumbersome in the fiegel.

The interior of the storage tank can be divided into three chambers in the upper part by two spaced, perforated baffles ^, whereby the lower chamber contains the warm glue supply, the middle chamber can be connected alternately to overpressure or underpressure and the upper chamber serves as an Euffer room » ^!

The control line opening into the middle chamber of the storage boiler is on the other side with a three-way valve connected, which automatically alternately connects to a pressure © of the vacuum source. The control of the three-way valve can be done by a program manager.

An air chamber is expediently switched on between the vacuum source and the three-way valve, so that the vacuum is maintained for everyone Switching is available immediately *

If the application device is used for simultaneous pulling several parallel rows of glue dots in multiple arrangement, then see the connection of the individual storage kettles by means of a pressure gauge for pressure compensation.

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■ dipl.inq. JULIUS QlLIARP ■

PATENT ADVOCATE

The drawing penetrates in a sehematic-like representation Embodiment for <iie innovation "

The storage boiler 1 is secured by a removable cover 2 sealed with a pressure and vacuum tight seal and has on In addition, the bottom of the outlet channel 3 to the feed nozzle 4 «is A heating jacket 5 is provided over a substantial height of the reservoir .1.

The reservoir 1 is by 2 to each other convex and in the putty perforated partition walls 6., 7 in a ■■ " lower chamber 8 with the clay glue supply f, an empty one middle chamber 1o and another empty upper chamber 11 divided. The empty middle chamber 1o is via a line 12 with a pressure gauge 13 attached to a three-way valve 14 connected to program switch 15, which is via the; Line 16 connects to a source of compressed air, not shown, and via line 1 ?. and the Air chamber 18 with vacuum generator 19 connecting to a not shown produces vacuum source *

By means of a conveyor device 2o is the one to be glued Object 21 led away under the feed nozzle 4. The distance between the feed nozzle 4 and the conveying device 2o can be mutable.

Does this applicator work as follows? In the pressure vessel T, the applied hot-melt adhesive 9 is heated to a temperature of 12 ° -13 ° by means of the heating jacket 5. The three-way valve 14 is controlled by the program switch 15 in such a way that when the adhesive is commanded, a pressure of about 0.75 atmospheres builds up in the storage tank 1 and the hot-melt adhesive exits through the feed nozzle 4 Pressed on via the three-way valve 15 with a vacuum le & Ms ^ gäsmm , so that the outflow at the feed nozzle 4 breaks off and a metered drop of hot melt adhesive 22 is applied to the object to be glued. 21 falls "

The air chamber 18 holds at rapid Sehaltfolge the vacuum in the storage tank 1 constant "When the procedure is the same then recommends with several such devices on the same above-eg nstaiid @ _9, the mutual connection of the storage tank 1 by Schaltmanometerj to at different

iNQ. JULIUS QILIARD

PATENT ADVOCATE

Clay glue stock 9 in the individual storage containers to apply the same pressure to everyone.

Wi © seen from the drawing, does not apply to the "application device after the firing unit, the pressing of the" to be glued item to the Aufgabedüse piping time is won. Experience has shown that look with an application device for the control coated and painted boxes with short times let them stick.

Claims (5)

Protection claims 1. Application device for applied via a gala nozzle Hot melt adhesive, especially * for gluing cardboard boxes with mutual pushing of the feed nozzle and loaded object, characterized that the hot melt adhesive (9) ia a heatable (heating jacket 5), pressure- and vacuum-tight storage tank (1) is filled with feed nozzle (4) at the lowest point and by alternately applying pressure and yakuum can be deposited on the Yorratskessel drop by drop onto the object (21) to be glued. 2. Application device according to claim 1, characterized in that the interior des.Torratskessel (.1) in the upper rope by two spaced, perforated guide plates (6, 7) in three chambers (8, 1o, 11) is subdivided, with the heated glue supply (9) located in the lower chamber (8), the middle one Chamber (1o) can be connected alternately to "overpressure © the negative pressure and the upper chamber (11) as Btaffer room is formed. 3. Applicator according to claims 1 and 2, characterized in that the middle chamber (1o) in the Yorratskessel (1) through a control line (12) "with" ■ a program-controlled three-way valve (14) is connected, which the middle chamber alternately with a compressed air source (line 16) or a Yakuumquelle (Line 17) connects 4. Application device according to claims 1 to 3 *> characterized in that between the Yakuumquelle and the three-way valve (H) connected to an air chamber (18) is. 5. Application device according to claims 1. to 4 · in a multiple arrangement, characterized in that the Yorratskessel (1) of the individual application devices for pressure compensation are interconnected by switching pressure gauges.